Fritz Ullmann
Fritz Ullmann (born July 2, 1875 in Fürth , † March 17, 1939 in Geneva ) was a German chemist . The Ullmann coupling is named after him. In addition, the Graebe-Ullmann synthesis is named after Carl Graebe and him .
Ullmann studied chemistry at the University of Geneva from 1893 and received his doctorate there in 1895. Then he was assistant for organic chemistry and from 1898 private lecturer in Geneva. He taught from 1905 to 1913 and from 1922 to 1925 technical chemistry at the Technical University of Berlin , first as a private lecturer , later as an associate professor .
In 1926 Ullmann returned to Geneva and took Swiss citizenship.
Ullmann discovered two important preparative synthetic methods:
- Alkylations with dimethyl sulfate (1900)
- Elimination of the halogens from aryl halides with finely divided copper ( Ullmann coupling ) for the production of diaryls (1901)
He was from 1914 to 1922, the first edition of the Encyclopedia of Industrial Chemistry in 12 volumes out under the name Encyclopedia of Industrial Chemistry , a still constantly updated standard work. Probably the first private assistant worked in his laboratory at the university from 1905 to around 1910, his future wife Irma Goldberg .
Web links
- Literature by and about Fritz Ullmann in the catalog of the German National Library
- Encyclopedia of Technical Chemistry 2nd Edition Internet Archive
Individual evidence
- ↑ a b c Winfried R. Pötsch, Annelore Fischer and Wolfgang Müller with the assistance of Heinz Cassenbaum: Lexicon of important chemists , VEB Bibliographisches Institut Leipzig, 1988, p. 431, ISBN 3-323-00185-0 .
| personal data | |
|---|---|
| SURNAME | Ullmann, Fritz |
| BRIEF DESCRIPTION | German chemist and university professor |
| DATE OF BIRTH | July 2, 1875 |
| PLACE OF BIRTH | Fuerth |
| DATE OF DEATH | March 17, 1939 |
| Place of death | Geneva |